Selenium
499 krS-Selenium is a blood test that measures the concentration of selenium in serum. Selenium is an essential trace element that the body needs in small amounts but is of great importance for several central biological processes. It is a key component of selenium-dependent enzymes – selenoproteins – that participate in the body's antioxidant protection, immune defense, fertility and hormone regulation.
Imbalances in selenium status can both cause and reflect underlying disease conditions. Low levels of selenium often occur in inflammatory bowel diseases, malabsorption or long-term lack of a selenium-rich diet. Elevated levels are uncommon but can occur with excessive supplementation.
The S-Selenium analysis is mainly used to:
For those of you who have a confirmed thyroid disease – such as hypothyroidism, autoimmune thyroiditis (Hashimoto's disease) or conversion problems between T4 and T3 – selenium can be a crucial factor in your hormonal balance.
Selenium is needed to activate the enzyme (iodothyronine deiodinase) that converts the inactive hormone T4 (thyroxine) into the biologically active T3 (triiodothyronine). This conversion takes place in the liver and other tissues, and in the event of a selenium deficiency, the production of T3 can decrease, which in turn can lead to symptoms such as fatigue, chills, brain fog, weight gain and low metabolism – even though TSH and T4 may be within reference.
Selenium deficiency has also been linked to an increased risk of developing autoimmune thyroid diseases, especially Hashimoto's thyroiditis. Some studies show that selenium supplementation can reduce levels of antibodies against the thyroid gland (TPOAk), although the effect may vary from person to person.
Therefore, analysis of S-Selenium is recommended as a complement to other thyroid tests, such as TSH, T3 and T4, for a more complete picture of your hormonal health.
Note! The blood sample can only be taken at clinics affiliated with SYNLAB. The sample is analyzed by Sahlgrenska University Hospital using the (ICP-MS) method for the highest precision.
Vitamins and minerals are essential nutrients that the body needs to maintain normal function, energy metabolism and immune function. They play a central role in everything from blood formation and bone health to hormone production and nerve function. Vitamin and mineral analyses are performed on the blood to identify any deficiencies or imbalances. They can provide important information about nutritional status and help optimize health through personalized dietary and supplement recommendations.
S-Selen measures selenium in the blood – an important trace element for the thyroid gland, the immune system and the body's protection against oxidative stress. The analysis helps to detect deficiency or excess.
Before visiting a reception for sampling, you need to do the following:
Activate referral and select reception
To activate your referral, simply follow the instructions that you will receive via email after completing the purchase. The email contains an activation code, by clicking on the link in the email you enter the flow to fill in any information, activate the referral and select reception in the sample answer service zample.
Before the sampling
The referral is available digitally at the sampling unit after you activate it, follow the instructions you receive via email. Here you can read our guidelines before taking samples.
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